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37ZDJ8040.fm 13 ページ ２０１９年１１月１２日 火曜日 午前１０時３５分
Source of Emissions
The combustion process produces carbon monoxide, oxides of nitrogen,
and hydrocarbons. Control of hydrocarbons and oxides of nitrogen are
very important because, under certain conditions, they react to form
photochemical smog when subjected to sunlight. Carbon monoxide
does not react in the same way, but it is toxic.
Honda utilizes appropriate air/fuel ratios and other emissions control
systems to reduce the emissions of carbon monoxide, oxides of nitrogen,
and hydrocarbons.
Additionally, Honda fuel systems utilize components and control
technologies to reduce evaporative emissions.
The U.S. and California Clean Air Acts, and Canadian Environmental
Protection Act
U.S. EPA, California, and regulations require all manufacturers to furnish
written instructions describing the operation and maintenance of
emission control systems.
The following instructions and procedures must be followed in order to
keep the emissions from your Honda engine within the emission
standards.
Tampering and Altering
Tampering is a violation of federal and California law.
Tampering with or altering the emission control system may increase
emissions beyond the legal limit. Among those acts that constitute
tampering are:
• Removal or alteration of any part of the intake, fuel, or exhaust
systems.
• Altering or defeating the governor linkage or speed-adjusting
mechanism to cause the engine to operate outside its design
parameters.
Problems That May Affect Emissions
If you are aware of any of the following symptoms, have your engine
inspected and repaired by your servicing dealer.
• Hard starting or stalling after starting.
• Rough idle.
• Misfiring or backfiring under load.
• Afterburning (backfiring).
• Black exhaust smoke or high fuel consumption.
Replacement Parts
The emissions control systems on your new Honda engine were
designed, built, and certified to conform with U.S. EPA, California, and
emissions regulations. We recommend the use of Honda Genuine parts
whenever you have maintenance done. These original-design
replacement parts are manufactured to the same standards as the
original parts, so you can be confident of their performance. Honda
cannot deny coverage under the emission warranty solely for the use of
non-Honda replacement parts or service performed at a location other
than an authorized Honda dealership; you may use comparable EPA
certified parts, and have service performed at non-Honda locations.
However, the use of replacement parts that are not of the original design
and quality may impair the effectiveness of your emissions control
system.
A manufacturer of an aftermarket part assumes the responsibility that
the part will not adversely affect emissions performance. The
manufacturer or rebuilder of the part must certify that use of the part will
not result in a failure of the engine to comply with emissions regulations.
Maintenance
As the power equipment engine owner, you are responsible for
completing all required maintenance listed in your owner's manual.
Honda recommends that you retain all receipts covering maintenance on
your power equipment engine, but Honda cannot deny warranty
coverage solely for the lack of receipts or for your failure to ensure that all
scheduled maintenance has been completed.
Follow the MAINTENANCE SCHEDULE on page 6.
Remember that this schedule is based on the assumption that your
engine will be used for its designed purpose. Sustained high-load or
high-temperature operation, or use in dusty conditions, will require more
frequent service.
SPECIFICATIONS
KRGA-type (basic type)
Length×Width×Height
Dry mass [weight]
Engine type
Displacement
[Bore×Stroke]
Net power
2.7 kW (3.7 PS, 3.6 HP) at 3,600 min
(in accordance with SAE J1349*)
Max. Net torque
(in accordance with SAE J1349*)
1
Engine oil capacity
*
Cooling system
Ignition system
PTO shaft rotation
*
1: When mount for rammer angle is 15°.
*
The power rating of the engine indicated in this document is the net
power output tested on a production engine for the engine model
and measured in accordance with SAE J1349 at 3,600 min
-1
Power) and at 2,500 min
(rpm) (Max. Net Torque). Mass production
engines may vary from this value.
Actual power output for the engine installed in the final machine will
vary depending on numerous factors, including the operating speed
of the engine in application, environmental conditions, maintenance,
and other variables.
TUNEUP SPECIFICATIONS
ITEM
SPECIFICATION
Spark plug gap
0.6–0.7 mm
(0.024–0.028 in)
Idle speed
1,850±150 min
Valve clearance
IN: 0.15±0.04 mm
(cold)
EX: 0.20±0.04 mm
Other
specifications
ENGLISH
259×294×290 mm
(10.2×11.6×11.4 in)
10.4 kg (22.9 lbs)
4-stroke, overhead camshaft,
single cylinder
3
121 cm
(7.38 cu-in)
[60.0×43.0 mm (2.4×1.7 in)]
-1
7.5 N·m (0.76 kgf·m, 5.5 lbf·ft)
-1
at 2,500 min
(rpm)
0.28 L (9 oz, 0.25 lmp qt)
Forced air
Transistor magneto
Counterclockwise
-1
(rpm) (Net
MAINTENANCE
Refer to page 9
-1
Refer to shop manual
(rpm)
See your dealer
No other adjustments needed.
(rpm)
13
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